Milwaukee’s two-pack of high-output batteries is another great deal, currently an impressive 50 percent off—a savings of $150—at Walmart. These 18-volt batteries are compatible with over 150 M18 cordless tools and have a 6-amp-hour capacity. They also come with overload protection and a three-year warranty.

Walmart has launched its own summer sale event to counter Prime Day. Only some deals are actually worth grabbing.

The best headphones for most new iPhone users are at their lowest price ever at Walmart, even less than Amazon's Prime Day sale.